This is a 5V 8-channel replay interface board which is able to control various appliance, and other equipments with large current. It can be controlled directly by Microcontroller(Arduino,8051,AVR,PIC,DSP,ARM,MSP430,TTL logic). 5V 8-Channel reply, interface board, and each one needs 15-20mA driver current. It equippes with high-current relay AC250V 10A and DC30V 10A also screw holes to install easily.Experimental ProceduresStep 1: Build the circuit